Viessmann Vitosol 200-F Installation Instructions Manual page 11

Vitosol DHW Solar Pack Installation
Installing on Sloped Roofs
Drill within
0.2 in. (5 mm)
of center
Correct
Source: CANSIA
Source: CANSIA
(continued)
Too close
to edge
Incorrect
Install the panel array level to prevent air pocketing in the
collectors.
Attaching roof brackets on shingled roof
1. The roof brackets 1 should be laid out as close as
possible to the dimensions shown in the diagram on
page 12.
2. Locate the roof joist by tapping along the roof to find
it's general location (stud finders do not work well
through shingles and roof sheathing).
3. Pry up the shingles and drill small pilot holes to locate
exact location of roof joist. If necessary, check where
pilot hole is coming through roof from inside of attic.
4. Drill pilot holes into center of joist as shown. Fill the
pilot holes and coat the bottom of roof bracket with
silicone sealant.
5. Attach bracket to roof joist using the supplied 3.1 in.
(80 mm) stainless steel screws 2. Screws should
penetrate the roof joist at least 2½ in. (64 mm). Use
longer (field supplied) screws if required to achieve
necessary penetration.
CAUTION
The roof bracket must be securely attached to the
roof joist of the structure. Only use stainless steel
attachment screws. Do not overtighten lag bolts as
the head may weaken and shear off.
CAUTION
The 3.1 in. (80 mm) screws supplied with the mounting
kit may not be sufficient length for some roof structures.
The installer must ensure screws will penetrate roof
joist sufficiently, and if not, must provide longer screws
or lag bolts.
Installation
11